Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad8aba904ba884f7…

MALICIOUS

PDF

46.3 KB Created: 2020-10-25 06:48:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: c7eec19556e2a5af42e685ff444dcd46 SHA-1: 53ad28ce52eb56393ac647706c9b07060c2d3dc9 SHA-256: ad8aba904ba884f79e586f4a911981c7d81f427fdf2223e6aff61bd55547a1b5
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.link/aws?keyword=definition+of+internet+marketing+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374517/normal_5f8c5b56a59ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365635/normal_5f872c8628f3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390095/normal_5f8ff54f0d28f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381108/normal_5f8d274308b6a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367281/normal_5f8751bc302ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365580/normal_5f8737e752c10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387035/normal_5f931f6e63a85.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zinudipir/define_coefficient_of_determination.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/10359628201.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/the_anglo-_saxon_chronicle.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/ratumutujapotusano.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/bangla_golpo_book_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/sieve_analysis_test_lab_report.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/8th_grade_science_test_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/gitedipopuwanosaviwozot.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/baguio_tourist_map_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/paroles_telephone_un_autre_monde.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f46b9150-4a72-44c2-b936-0dbb834d310e/ziggy_marley_beach_in_hawai.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/987fd47e-1edc-40d3-b8d1-81abb98b016f/67186949405.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4aedc11f-4f43-4b62-a8f7-1ca460cb6a98/71873585511.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b395b1d-75ae-47a4-b3f4-8e66ba5f6b09/wonderdraft_download_cracked.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B11 5004 bytes
SHA-256: 926fee38c8a709e7e410b1c5eaaa3afde4b9577d24353fc1bbf5b4eb190204cf
font_01_sfnt_off00007bfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BFD 9808 bytes
SHA-256: ec5ff9ad9dcbc32f436cbcf9751554aba93eab5daa678b8b6fec9aea674ae138
font_02_sfnt_off00009da4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DA4 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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